Sheet-delivery apparatus for printing-presses.



Patented Oct. l5, I9OI. W. SCOTT. SHEET DELIVERY APPARATUS FOR PRINTING PBESSE'S.

' (Application filed Fab. 2, 1897.! i

(No Model.) 2 Sheets-Sheet I.

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Patented Oct. l5, l90l.

W. SCOTT. SHEET DELIVERY APPARATUS FOR PRINTING PRESSES.

(Application filed Feb. 2, 1897.)

WITNESSES:

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3% Afzomey WALTER SCOTT, OF PLAINFIELD, NEW JERSEY.

SHEET-DELIVERY APPARATUS FOR PRlNTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 684,464, dated October 15, 1901. Application filed February 2, 1897. $erial No. 621,677. (No model.)

To all whom it may concern.-

Be it known that I, WALTER SCOTT, a citizen of the United States, and a resident of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Delivery Apparatus for Printing-Presses, of which the following is a specification.

This invention has relation to the improvement of the sheet-delivery apparatus of printing-presses, the primary object being the delivery of sheets with theirfreshly-printed sides uppermost,and other obj ects,as will hereinafter more fully appear.

To these ends this invention consists of devices and combinations of devices hereinafter described, and more particularly pointed out in the claims concluding this specification.

The preferred form of the invention is shown in the accompanying drawings, (three sheets,) forming part hereof, in which Figure 1 is a partial side elevation of a tworevolution stop-cylinder printing-machine in which the preferred form of my invention is embodied. Fig. 2 is a plan view of the same. Fig. 3 is a vertical cross-sectional View showing the tape-winding roller and parts of the mechanism for moving the same.

The reference-letter '1 marks the type or form bed, shown in this instance as carrying a lithographic stone or form f.

The reference-letter 0 indicates the tworevolution stop-cylinder, which is or may be operated after the manner set forth in my Letters Patent granted the 3d day of October, 1893, and numbered 505,961. In addition to the operating mechanism above named for the cylinder 0 there is also provided a lifting mechanism for the cylinder 0 similar to or identical with that shown in my Letters Patent granted on the 15th day of April, 1890, and numbered 425,710. The cylinder 0 is provided with a set of grippers 2 and liftingfingers 3. The sheets are fed to the cylinder 0 in any suitable way, as by hand, from the feed-board B, suitable gages being employed, if so desired. The bed T is operated in any suitable manner, as by means of the rack 4 thereon and the rolling gear-wheel 5, which meshes with rack 4, and the rack 6 on the framework F of the machine. With the bed Tin the position shown in Fig. 1 it is just be ginning a printing stroke toward the right. The grippers 2 take a sheet from the board B, and the cylinder 0 is lowered in time for it to take an impression on the sheet from the stone or other form f. The cylinder 0 rises in time to avoid the ink-table I. As the grippers 2 approach or pass the guides 7 they are opened,

omitted altogether. The sheets are run by the tapes i upon the supports 15*, (shown as rib bons or the like,) which have one end fast to the cross-bar b of the frame F between the pulleys or rollers 19 p and which pass out over the roller 19 and have their other ends fast to the traveling roller or pulleys r. This roller 0" is journaled in lugs or other parts of the racks S, which are guided on the framework F as they are moved to and fro by the gears or pinions 9 on the shaft 10. This shaft 10 is journaled in the frame F and extends across the machine. At one end the shaft 10 is provided with the bevel-gear 11, which meshes with a like gear 12, borne by the vertical side shaft 13, which is journaled in suitable boxes on the frame F. The shaft 13 car ries a spur-pinion 14 at its lower end, which is in mesh with the guided movable rack 15. The rack 15 is moved to and fro by the rod 16, which is connected to a crank-pin on the shaft from which gear 5 is operated. (Not shown.) The heads of the sheets as they are fed out by the tapest are caught by the grippers 16, which are borne by the shaft 1'7, journaled in projections of the racks 8. These grippers coact with the fixed fingers 18, which are borne by the shaft 19, fixed to lugs on the racks 8, the grippers being moved against the fingers by their own weight or by a suitable spring. (Not shown.) During the travel of the roller r and the grippers 16 to the left in Fig. 1 the latter remain closed until the roller 20 on arm 21 of shaft 17 is moved downward by the cam 22 on the framework F suffrciently for the pivoted latch 23, borne by a lug g of the racks 8, to be forced over the roller (or pin) 20 to catch and hold it, the latch 23 being operated by a spring 24, fast to the lug g and bearing against the latch. This opening of the grippers 16 to release the sheets occurs just as roller 1" and racks 8 reach the limit of their motion to the left in Fig. 1, and the grippers remain open on the reverse motion of those parts until they reach the limit thereof, when the latch 23 is moved so as to release the grippers by the pin 25 on frame F, against which the latch strikes at this time. The sheets, which are carried out by the grippers 16 and supported by the tapes 25 during such carrying out, drop onto the delivery-board D as the roller 1' rolls or moves away from under them, beginning at the heads of the sheets. The rollerr is constructed of a barrel portion h, which is rigid with one of its ends, which forms a journal, and is journaled on a stud s of the frame F at its other end. A spring 26, fast at one end to the gears can be arranged so as to give less motion to the spring.

In order to assist in removing the lithographic stones or other forms from the bed T, I employ the devices shown in Figs. 1, 4:, and 5. These consist of lever m, pivoted to the bed and provided with an arm n, which extends under the stone, the bed being suitably recessed, as at 0, to allow the arm n to so extend. The leverm is adapted to receive a Wrench or lever to, by which greater purchase on the stone or form to be lifted is obtained. By this means the removal of lithographic or other forms from the box-like bed is greatly facilitated, as the lever m raises the form to a position whence it can be removed easily by hand.

The use of the grippers is not essential in all cases, for the tapes 25 may run out the sheets by momentum on the support which extends under them as they are so run out and collapses to deliver them; nor is it essential that the tapes t be used, since the collapsible support may be placed adjacent the impression-cylinder and the sheets be run directly onto the support.

1 have not described many of the parts shown, since they are well known in the art and are, many of them, fully described in my Letters Patent aforesaid. I

It is obvious that a single fabric or sheet may be used in place of the ribbons t in the extensible collapsible support for the sheets and that many other changes may be made in details and parts of combinations without departing from the spirit of my invention.

That is claimed is- 1. The combination of mechanism for delivering printed sheets, a set of tapes fast to the fixed framework of the machine and onto which said mechanism delivers the sheets, a to-and-fro-moving carriage, a power-driven roller journaled on said carriage and to which said tapes are fast, and gripper mechanism on said carriage including lower members connected to said carriage beneath said tapes and extending over said roller and the other gripper members connected to said carriage at the other side of said tapes and coacting with said lower members to grip the sheets, substantially as described.

2. The combination of mechanism for delivering printed sheets, a set of tapes fast at one end to the fixed framework of the machine and onto which said mechanism delivers the sheets, a to-and-fro-moving carriage,

a spring-roller journaled on said carriage andto which said tapes are fast and on which they wind, gripper members connected to said carriage beneath. said tapes, and other gripper members connected to said carriage at the other side of said tapes, substantially as described.

Signed at New York, in the county of New York and State of New York, this 22d day of January, A. D. 1897.

WALTER SCOTT.-

Witnesses:

WILLIs 13. Down, RICHARD W. BARKLEY. 

